LOS ANGELES (Reuters) – Ever wonder what goes on in the back seats of those Hollywood limousines stuffed with A-list stars as they pull up to Oscar's glitzy red carpet? Is champagne flowing? Sometimes. Are diamonds dripping? Likely. Are gowns and tuxedos ready for TV? Mmmm, it pays to have a needle and thread handy. Chris Hundley, owner of Los Angeles-based Limo Connection, knows only too well …